Because fructose is digested in your liver, it is immediately turned into triglycerides or stored body fat. Since it doesn’t get converted to blood glucose like other sugars, it doesn’t raise or crash your blood sugar levels. Hence the claim that it is safe for diabetics.
That’s because fructose inhibits leptin, the hormone your body uses to tell you that you’re full. In other words, fructose makes you want to eat more. Besides weight gain, it also makes you gain the most dangerous kind of fat.